Branchus
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P2715Q, sometimes cannot wake up from power saving mode.

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Hi,

I bought P2715Q 4K monitor about two weeks ago and I am suffering a problem of waking up the monitor from power saving mode.

My build and set up:
Lenovo Workstation P500
Nvidia Quadro K2200 (One DVI and two DP), with latest driver. Single monitor setup
Windows 8.1 with all the updates
P2715Q monitor revision A01, manufactured in Mar 2015, monitor driver installed under windows 8.1, connected with DP to DP cable (also tried the stock DP <->mDP cable) 

Problem =
In windows power settings, I allow monitor to go into sleep if there is no activity in 10 minutes. Then the monitor will give me a message on the screen "entering into power saving mode", then the screen goes to black and the power button LED starts dimming. This all works out as expected. When I get back to the desk and try to reactivate the monitor, the monitor just doesn't response. At this stage, the power button and all the function button on the monitor all lose their functions, I cannot even turn the monitor off by press or keep holding the power button. If I unplug the power cord and reconnect the cord, the monitor wakes up and function normally. This happened three times to me so far. 

What I have done so far =
I have bought a better quality DP-DP cable and replaced the stock DP <->mDP cable, but not help to solve the problem.
I have used a file EDID and loaded it in nVidia Quadro Driver.
Researched the Web and manually amended settings in windows registry and solved the desktop re-arranging issue, but not this cannot wake up monitor issue
Disabled the DDC/CI function in the monitor

What is the problem? Do I need to call Dell support?

Thanks

JH

17 Replies
slx1
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RE: P2715Q, sometimes cannot wake up from power saving mode.

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Same here, but 24". Had to disable sleep, can't solve that.

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Branchus
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RE: P2715Q, sometimes cannot wake up from power saving mode.

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While I was waiting for this new 4K monitor arrival, I temporary used a Dell 2007WFT monitor with DVI connection. There is no problem at all. Everything worked perfect. With is new 4K monitor, DP 1.2 is my only option, only this can support 4K at 60Hz.

Not sure it is a monitor's problem or DP's problem

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Moderator
Moderator

RE: P2715Q, sometimes cannot wake up from power saving mode.

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A user of the P2415Q using AMD had similar issue. He reported that the latest AMD beta driver seemed to fix the issue. But it looks like the latest driver from Nvidia 347.88 is the newest out there. Is that version you have installed?

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Branchus
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RE: P2715Q, sometimes cannot wake up from power saving mode.

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HI Chris

Yes, 347.88 is the driver i'm using.

Any suggestion?

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Moderator
Moderator

RE: P2715Q, sometimes cannot wake up from power saving mode.

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I doubt that the monitor is faulty on a hardware level. My gut says an exchange may have the same issue. All you can do is wait for Nvidia to release a newer beta driver and test it.

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Highlighted
Branchus
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RE: P2715Q, sometimes cannot wake up from power saving mode.

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I have forced a file EDID in my Quadro driver for two days, seems solved the problem, I still think the DP or HDMI port timing and syncing caused the problem. I have read a lot of people had the same problem over last 5 years, Let's hope windows 10 or a new nVidia driver can solve the problem.

I will keep running the monitor with file EDID loaded in the driver. i will be back in two week's time and report whether this EDID thing really a solution.

Quoted from nVidia

What are the benefits to Managing the EDID?

Managing the EDID is useful in the following use cases:

  • •In A/V environments with switchers and/or cable extenders the display EDID may be lost.
  • •Protecting against hot plug events.
  • ◦In Windows 7 and 8 if you unplug a display that will trigger a hot plug event which may reconfigure your displays.
  • ◦With the EDID being read from file the OS will always think the display is attached.
  • •You can use it to fake a display being attached for testing.
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Branchus
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RE: P2715Q, sometimes cannot wake up from power saving mode.

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Hi

as promised, I come back in about two week's time, confirmed that "file EDID" can solve this problem. it never happened again.

In addition, nVidia updated their Quadro driver and windows also updated the monitor driver to v2. not sure what has changed. but better to upgrade to the latest version.

Cheers

JH

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Moderator
Moderator

RE: P2715Q, sometimes cannot wake up from power saving mode.

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Branchus, Can you list the instructions, step by step. you used to do this? I can then archive them and also send them to the Displays Team. Thanks!

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Branchus
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RE: P2715Q, sometimes cannot wake up from power saving mode.

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Hi Chris

you can refer to this official nvidia support post, it has step by step instructions and explanations. The only draw back is only quadro driver has this function, normal geforce driver doesn't have this.

http://nvidia.custhelp.com/app/answers/detail/a_id/3569/~/managing-a-display-edid-on-windows

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